diff options
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/arc_uart.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/tty/serial/arc_uart.c b/drivers/tty/serial/arc_uart.c index 008c223eaf26..99c567ee18d3 100644 --- a/drivers/tty/serial/arc_uart.c +++ b/drivers/tty/serial/arc_uart.c @@ -531,8 +531,14 @@ arc_uart_init_one(struct platform_device *pdev, int dev_id) { struct resource *res, *res2; unsigned long *plat_data; - struct arc_uart_port *uart = &arc_uart_ports[dev_id]; + struct arc_uart_port *uart; + if (dev_id >= ARRAY_SIZE(arc_uart_ports)) { + dev_err(&pdev->dev, "serial%d out of range\n", dev_id); + return -EINVAL; + } + + uart = &arc_uart_ports[dev_id]; plat_data = dev_get_platdata(&pdev->dev); if (!plat_data) return -ENODEV; |